The New Horizons mission to Pluto isn’t rewriting the textbooks, says NASA spokesman Dwayne Brown.
“It is writing the textbooks,” he said, as he closed a press briefing with mission scientists.
Pluto has been something of a blank slate — a tiny point of light in the sky — since its discovery in 1930.
New Horizons, traveling for more than nine years and 3 billion miles, gave it its first close-up on July 14.
Here are seven things we did not know about Pluto before we went there.